# Nutricost KSM-66 Ashwagandha Extract with Black Pepper Extract Capsules

## Clinically studied stress support. Backed by 22+ human trials.

Nutricost KSM-66 Ashwagandha delivers 600mg of the most researched ashwagandha extract per capsule — the same full-spectrum root extract used across over 22 peer-reviewed clinical studies.

*   **600mg KSM-66 per capsule** — the clinically studied dosage, not a diluted extract
*   **Adaptogen support** — helps the body manage stress and supports healthy cortisol balance
*   **Energy and mental clarity** — supports sustained focus without stimulants
*   **Sleep quality** — ashwagandha has been studied for its role in supporting restful sleep
*   **Athletic performance and recovery** — supports muscle strength and post-workout recovery

![Nutricost KSM-66 Ashwagandha 600mg capsules bottle front](https://cdn.shopify.com/s/files/1/0045/1959/2065/files/1270264_front.jpg?v=1768191490)

## The gold standard extract, enhanced for absorption.

KSM-66 is a patented, full-spectrum ashwagandha root extract produced using a proprietary process that preserves all the natural constituents of the herb. It is the only ashwagandha extract produced using a "green chemistry" approach with no alcohol or chemical solvents.

Each capsule also contains Black Pepper Extract (BioPerine) — a clinically validated bioavailability enhancer. BioPerine has been shown to increase the absorption of nutrients, ensuring more of each dose reaches your system.

*   **Full-spectrum root extract** — not a leaf-stem blend; root only for maximum potency
*   **KSM-66 certified** — verified withanolide content, batch tested
*   **BioPerine enhanced** — added black pepper extract for improved bioavailability
*   **Vegan capsules** — Non-GMO, no artificial flavors or colors

![Nutricost KSM-66 Ashwagandha supplement facts label](https://cdn.shopify.com/s/files/1/0045/1959/2065/files/1270264_back.jpg?v=1772648657)

### Key Features

*   **KSM-66 Certified**: Full-spectrum ashwagandha root extract with standardized withanolide content. The most researched form available, with 22+ published human clinical trials.
*   **BioPerine Enhanced**: Black Pepper Extract (BioPerine) included in each capsule to increase bioavailability — so you absorb more of what you take.
*   **Clinically Studied**: KSM-66 is backed by rigorous independent research across stress, cognition, sleep, and athletic performance — not just traditional use.

## What's Included

Each bottle contains 60 capsules of Nutricost KSM-66 Ashwagandha Extract with Black Pepper Extract. The single-bottle option provides a standard supply for personal use. The case option contains 12 bottles and is suited for ongoing use or for practitioners.

*   60 vegetarian capsules per bottle
*   600mg KSM-66 Ashwagandha Root Extract per capsule
*   Black Pepper Extract (BioPerine) included per serving
*   No artificial flavors, colors, or preservatives
*   Non-GMO

## FSA/HSA Eligible?

Dietary supplements, including ashwagandha capsules, are generally not eligible for reimbursement under Flexible Spending Accounts (FSA) or Health Savings Accounts (HSA) unless accompanied by a Letter of Medical Necessity (LMN) from a qualified healthcare provider. Eligibility rules vary by plan administrator.

We recommend confirming with your plan administrator before submitting a claim for this product.

## Frequently Asked Questions

**What is ashwagandha?**
Ashwagandha (Withania somnifera) is an adaptogenic herb used in Ayurvedic medicine for centuries. Adaptogens are compounds that help the body respond to physical and mental stressors. KSM-66 is a specific patented extract of ashwagandha root with standardized active compounds (withanolides).

**How long before I feel results?**
Clinical studies on KSM-66 typically show measurable effects after 4–8 weeks of consistent daily use. Stress and cortisol-related outcomes tend to be observed at the 8-week mark in most published trials.

**Can I take this with other supplements?**
Ashwagandha is generally well-tolerated alongside most supplements. However, if you are taking medications — particularly for thyroid, blood pressure, immunosuppression, or sedatives — consult your healthcare provider before adding ashwagandha to your routine.

**What is the best time to take it?**
There is no universally established best time. Many users take ashwagandha with a meal to reduce the chance of digestive discomfort. Some prefer evening use to support sleep quality. Follow the label directions and consult a healthcare professional if unsure.